LONDON :McLaren's Formula One championship leader Oscar Piastri said cursing at former employers Alpine over the radio at last weekend's Austrian Grand Prix was just a humorous way of expressing his frustration. The Australian made a comment after having to go off track to avoid Renault-owned Alpine's Argentine driver Franco Colapinto. "Alpine still managed to find a way to (expletive) me over all these years later, huh?," he told race engineer Tom Stallard in an exchange not broadcast on